Expert backend development guidance covering Node.js, Python, Java, Go, API design (REST/GraphQL/gRPC), database patterns, authentication, caching, message queues, microservices, and testing. Produces production-ready, scalable, and secure backend code with industry best practices.
Install
npx skills add DauQuangThanh/hanoi-rainbow --skill backend-codingnpx skills add DauQuangThanh/hanoi-rainbow --skill backend-coding -a claude-code -gnpx skills add DauQuangThanh/hanoi-rainbow --skill backend-coding -a codex -ggemini skills install https://github.com/DauQuangThanh/hanoi-rainbow.git --path skills/backend-codinggh skill install DauQuangThanh/hanoi-rainbow backend-codinggit clone --depth 1 https://github.com/DauQuangThanh/hanoi-rainbow /tmp/DauQuangThanh__hanoi-rainbow
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/DauQuangThanh__hanoi-rainbow/skills/backend-coding ~/.claude/skills/backend-coding # Claude Code
cp -R /tmp/DauQuangThanh__hanoi-rainbow/skills/backend-coding ~/.agents/skills/backend-coding # Codex, Cursor, Gemini CLI, Copilot, OpenCode